Data Input
So what is going on “behind the scenes”?
read_delim(): Read a delimited file into a data frame.
function (file, delim, quote = "\"", escape_backslash = FALSE,
escape_double = TRUE, col_names = TRUE, col_types = NULL,
locale = default_locale(), na = c("", "NA"), quoted_na = TRUE,
comment = "", trim_ws = FALSE, skip = 0, n_max = Inf, guess_max = min(1000,
n_max), progress = show_progress(), skip_empty_rows = TRUE)
NULL
# example:
read_delim(file = "file.txt", delim = "\t")
read_delim("file.txt", "\t")
Data Input
There is another convenient function for reading in CSV files, where the delimiter is assumed to be a comma:
ufo = read_csv("../data/ufo/ufo_data_complete.csv")
── Column specification ────────────────────────────────────────────────────────
cols(
datetime = col_character(),
city = col_character(),
state = col_character(),
country = col_character(),
shape = col_character(),
`duration (seconds)` = col_double(),
`duration (hours/min)` = col_character(),
comments = col_character(),
`date posted` = col_character(),
latitude = col_character(),
longitude = col_double()
)
Warning: 199 parsing failures.
row col expected actual file
877 -- 11 columns 12 columns '../data/ufo/ufo_data_complete.csv'
1712 -- 11 columns 12 columns '../data/ufo/ufo_data_complete.csv'
1814 -- 11 columns 12 columns '../data/ufo/ufo_data_complete.csv'
2857 -- 11 columns 12 columns '../data/ufo/ufo_data_complete.csv'
3733 -- 11 columns 12 columns '../data/ufo/ufo_data_complete.csv'
.... ... .......... .......... ...................................
See problems(...) for more details.